How many times do I have to replace circuit board on my opener? So far this will be the fourth now I also have to replace the sensors .This thing is only 7 yrs. old . I have 2 chamberlin openers on ot

hi
Open the transfer cover. Is there any paper on the transport path? YES Remove the paper. NO Is the exit sensor working? (Perform the input check in the test mode: 03-[FAX]ON/[2]/[B]) NO 1) Check if the connector of the exit sensor is disconnected. 2) Check if the connector CN308 on the LGC board is disconnected. 3) Check if the connector pins are disconnected and the harnesses are open circuited. 4) Check if the conductor pattern on the LGC board is short circuited or open circuited. 5) Replace the exit sensor. 6) Replace the LGC board. YES Is the registration roller clutch working? (Perform the output check in the test mode: 03-108/158) NO 1) Check if the connector of the registration roller clutch is disconnected. 2) Check if the connector CN305 on the LGC board is disconnected. 3) Check if the connector pins are disconnected and the harnesses are open circuited. 4) Check if the conductor pattern on the LGC board is short circuited or open circuited. 5) Replace the registration roller clutch. 6) Replace the LGC board. YES Check the registration roller. Replace it if it is worn out.

https://printcopy.info/?l=en&mod=erc&brand=Toshiba&model=e-Studio%20556&code=E010


Quoting from link above:

Code

E010

Description

Paper not reaching fuser transport sensor: Paper which has passed the fuser unit does not reach the fuser transport sensor.

Remedy

Open the jam access cover. Is there any paper on the transport path or in the fuser unit? ? YES ? Remove the paper. NO Is the fuser transport sensor working? (Perform the input check in the test mode: 03-[FAX]OFF/[7]/[C]) ? ? NO ? 1. Check if the connector of the fuser transport sensor is disconnected. 2. Check if the connector CN332 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short circuited or open circuited. 5. Replace the fuser transport sensor. 6. Replace the LGC board. YES Is the transfer belt working? ? ? NO ? 1. Check if the connector of the transport belt is disconnected. 2. Check if the connector on the transport motor driving PC board is disconnected. 3. Check if the connector CN341 on the LGC board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are open circuited. 5. Check if the conductor pattern on the LGC board is short circuited or open circuited. 6. Replace the transport motor driving PC board. 7. Replace the LGC board. YES Is the drum separation finger solenoid working? (Perform the output check in the test mode: 03-111,161) ? ? NO ? 1. Check if the connector of the drum separation finger solenoid is disconnected. 2. Check if the connector CN339 on the LGC board is disconnected. 3. Check the installation state of cleaner. 4. Is the relay connector connecting the cleaner unit and the equipment disconnected or stained with toner? 5. Replace the drum separation finger solenoid. 6. Replace the LGC board. YES Is the registration sensor working? (Perform the input check in the test mode: 03-[FAX]ON/[4]/[E]) ? ? NO ? 1. Check if the connector of the registration sensor is disconnected. 2. Check if the registration sensor is installed correctly. 3. Check if the registration actuator is operating properly. 4. Check if the connector CN341 on the LGC board is disconnected. 5. Check if the connector pins are disconnected and the harnesses are open circuited. 6. Check if the conductor pattern on the LGC board is short circuited or open circuited. 7. Replace the registration sensor. 8. Replace the LGC board. YES Is the registration motor working? (Perform the output check in the test mode: 03-108/158) ? ? NO ? 1. Check if the connector of the registration roller clutch is disconnected. 2. Check if the connector CN341 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short circuited or open circuited. 5. Replace the registration roller clutch. 6. Replace the LGC board. YES Check if there is any abnormality in the space between the registration motor and the registration roller (metal). Check if the registration roller (rubber) is rotating smoothly. Check the condition of the registration roller at the horizontal transport section and clean or replace it. * If the error [E010] caused by a paper jam underneath the drum cleaner often occurs due to an insufficient paper separation from the photoconductive drum, set a smaller value in the code 08-841, and see what happens. At this time, however, pay attention to the transferability at the leading edge of the paper since this transferability can be slightly narrowed depending on the environments and conditions under which the equipment is placed or the media type of the paper used. (Refer to 3.6.1 in this manual about the details of the code 08-841.)

Lower drawer transport jam (Paper not reaching the
registration sensor): The paper does not reach the
registration sensor after it has passed the 1st transport
sensor.

Open the transfer cover. Is there paper in front of the registration sensor?
?? YES ?? Remove the paper.
NO
Is the registration sensor working?
(Perform the input check in the test mode: 03-[FAX]ON/[2]/[A]
llllllll
??
NO ?? 1) Check if the connector of the registration sensor is disconnected.
2) Check if the connector CN305 on the LGC board is disconnected.
3) Check if the connector pins are disconnected and the harnesses are
open circuited.
4) Check if the conductor pattern on the LGC board is short circuited or
open circuited.
5) Replace the registration sensor.
6) Replace the LGC board.
YES
Are the (lower/middle) transport clutches working?
(Perform the output check in the test mode: 03-203, 205)
lllllllll
??
NO ?? 1) Check if the connectors of the (lower/middle) transport clutches are
disconnected.
2) Check if the connector CN305 on the LGC board is disconnected.
3) Check if the connector pins are disconnected and the harnesses are
open circuited.
4) Check if the conductor pattern on the LGC board is short circuited or
open circuited.
5) Replace the (lower/middle) transport clutches.
6) Replace the LGC board.
YES
1) Check the condition of the feed roller, separation roller and pickup roller of each paper
source, and replace them if they are worn out.
2) Check the transport roller. Replace it if it is worn out.

Open the cover of the unit/area whose picture is blinking on the control panel. Is there any paper on the transport path? (Refer to the following table.)
IF Yes Remove the paper.
No 2
2 Is the sensor in the
jamming area working?
IF No • Check if the connector of the sensor is
disconnected.
• Check if any of the connectors on the LGC
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor pattern on the LGC
board is short circuited or open circuited.
• Replace the sensor
• Replace the LGC board.
3 LGC board • Replace the LGC board.

Check the circuit board that makes the spark to light the flame. Under normal operation, the board opens the gas valve for a very short period of time while it generates the spark. If the flame sensor doesn't feel the flame it will shut off the gas valve to prevent an explosion. The flame sensor could be too far away from the flame edge or not working any more as well as the spark portion of the board. The gas valve itself may not be responding to the circuit board too.

1. Take remote control far away from tv - 3rd or fourth room. Then switch on tv. If uncontrollable scrolling stops , then cause may be remote button (Ch+ or Ch-) has got dirt inside and its shorting.

2. If taking remote far away doesn't stop scrolling then (Ch+ or Ch-) button on front pannel has shorted. Take a cutter plier and care fully remove button from its circuit board. ( If you know desoldering, it is far better than cutting). If scrolling stops then you can operate channel change with remote.

[CEA0] Revolver home position detection abnormality
Is the revolver home position sensor working properly? May need to be cleaned.(Perform the input check: 03-[FAX]ON/[2]/[C])
NO 1. Check if the connector or joint connector of the revolver home position sensor is
disconnected.
2. Check if the connector CN361 on the LGC board is disconnected.
3. Check if the connector pins are disconnected or the wires of harnesses are
open circuited.
4. Check if the conductor pattern on the LGC board is short circuited or open
circuited.
5. Replace the revolver home position sensor.
6. Replace the LGC board.
YES
1. Check if the conductor pattern on the LGC board is short circuited or open circuited.
2. Replace the LGC board.

GE / Hotpoint / RCA
Oven Fault Codes
Display Condition Remedy
F0 & F1 Failed Thermistor Control Replace ERC
F2 Oven Temp Exceeds 590 with unlocked door High resistance in Sensor, likely a bad sensor
F3 Open Sensor circuit Open (blown) sensor fuse or bad Sensor
F4 Shorted wire or Sensor locate short and correct it
F7-A Function pad button stuck Clean and unstick
F7-B Bad Clock Replace Clock
F8 Electrical component failure Replace ERC
F9 Program with door circuit Check wiring

Frigidaire / Westinghouse / Tappan / Gibson
Oven Fault Codes
Display Condition Remedy
F0 & F1 EOC failure Replace EOC
F2 Oven over heat Defective Sensor or EOC
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it
F5 EOC failure Replace EOC
F6 EOC failure Replace EOC
F7 EOC failure Replace EOC


Maytag / MAYCOR / Magic Chef / Jennair / Admiral
Oven Fault Codes
Display Condition Remedy
F0 Function key shorted or stuck button Clean and unstick button or replace Touch Pad or Clock
F1 Defective Touch Pad or Membrane Replace Touch Pad or Membrane
F2 Oven over heat defective Relay Board or (if present) or defective Sensor
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Hardware, safety circuits disagree Replace Clock
F6 Missing AC (power) signal Check for proper voltage (plug, breaker, etc.)
F7 Function key shorted or stuck button Clean and unstick button or replace Touch Pad or Clock
F8 A/D Warning Replace Clock
F9 Door Lock Warning Check door lock circuit or Replace Clock


Amana / Caloric
Oven Fault Codes
Type with display - glass link ERC
Display Condition Remedy
F0 No Safety Signal Replace adapter board
F1 No Safety Signal Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F7 Shorted Touch Panel Replace Glass Panel
F9 Door Latch Error Check latch
FF Lock Error Check switch and motor
ERC III - Relay board with separate board/push buttons
F0 Shorted Push Pad Replace Push Pad
F1 Defective ERC Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Check/Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Defective ERC Replace ERC
F6 Defective ERC Replace ERC
F7 Shorted or sticking button Clean button or replace touch pad
F8 Defective ERC Replace ERC
F9 Door Latch Error Check latch


The following diagnostic chart Does not apply to Whirlpool 'Y' line products. If the model number contains a Y near the end of the number, DO NOT use this chart.
Whirlpool / KitchenAid / Roper
Oven Fault Codes
Ovens with 4 digit displays
Display Condition Remedy
F0-E0 Analog to Digital failure Disconnect panel for 30 seconds. if error re-appears then replace control
F1-E1 Defective ERC Replace ERC
F2-E0 Shorted Keypad Replace Keypad
F3-E0 Sensor or Sensor Fuse Open Replace Sensor or Fuse
F3-E1 Shorted wire or Sensor locate short and correct it or replace Sensor
F3-E2 Oven over heat Replace Sensor
F3-E3 Cleaning Temp over heat Replace Sensor
F5-E0 Door Error Check Door
F5-E1 Door Latch Check Latch
F5-E2 Door Switch Check Switch
Ovens with 2 Digit Displays
F0 Defective ERC Replace ERC
F1 Defective ERC Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Check/Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Defective ERC Replace ERC
F6 Problem with time keeping circuit Reset Time or cooking operation and check for proper ground
F7 Shorted or sticking button Clean button or replace ERC
F8 Defective ERC Replace ERC
F9 Door Latch Error Check latch and latch circuit


If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

You have a faulty keypad. You could probably special order this part from a local appliance parts supply store for 50-60$ or purchase a new microwave.